M&S says

Made from 100% cotton, this sweet children’s dress is a must-have for summery days with its soft jersey fabric and breezy style. Our short sleeve dress features an all-over parasol print, for a colourfully whimsical design they’re sure to love. It’s finished with a keyhole detail at the back and a simple button fastening, perfect for everyday play.

Style

Care and Composition

35 days to return
You may return unused products within 35 days of purchase with a valid parcel summary document. Your items don't need to be in the original box or bag as long as they're securely packaged.How to return
It’s easy to return items to M&S. Simply print the returns label, attach it to the top of your parcel and insert the returns note in the parcel. Drop your parcel at a local post office. We will automatically deduct the cost of return from your refund.